updated README

README.md

@@ -10,12 +10,30 @@ Make sure dependencies are installed:
 *   matplotlib
 *   numpy
 
+### Installation from repository
+This will install itudplot for your python in your local folder (so you do no break system packages, despite what "--break-system-packages" implicates)
+
+    pip install --user --break-system-packages git+https://gitea.pkm.physik.tu-darmstadt.de/IPKM/python-tudplot.git
+
+Another way is to use a venv for your project:
+
+    python3 -m venv venv
+    source ./venv/bin/activate
+    pip install git+https://gitea.pkm.physik.tu-darmstadt.de/IPKM/python-tudplot.git
+
+or use your existing venv.
+
+
+
+
+
+### Installation from source
 Download the source as [zip file](https://gitea.pkm.physik.tu-darmstadt.de/IPKM/python-tudplot/archive/main.zip) or clone it with git:
     git clone https://gitea.pkm.physik.tu-darmstadt.de/IPKM/python-tudplot.git
 
 Then in the unpacked source directory run:
 
-    python3 setup.py install --user
+    pip install --user --break-system-packages .
 
 ## Usage